- remove the old LGPL license headers from all files in Spack
- add SPDX headers to all files
- core and most packages are (Apache-2.0 OR MIT)
- a very small number of remaining packages are LGPL-2.1-only
- pytest was not reporing the correct version from pytest.__version__.
It reported 'unknown'
- this fixes issues on some systems where system-installed pytest plugins
would try to use the version and convert it to an int
* Vendor ordereddict for python2.6 only
This commit substitutes the custom module 'ordereddict_backport' with
the more known 'ordereddict' and vendors it only for python 2.6. Other
supported versions of python will use 'collections.OrderedDict'.
* Use absolute imports also for python 2.6
See PEP-328 for more information on the subject
* Added provenance of vendored ordereddict
- Update YAML version to support Python 3
- Python 3 support for ordereddict backport
- Exclude Python3 YAML from version tests.
- Vendor six into Spack.
- Make Python version-check tests work with Python 3
- Add ability to add version check exceptions with '# nopyqver' line
comments.
python install and lib/spack/external have the same library installed. This
requires modifying the names of some modules in lib/spack/external in cases
where both the system python and backported features of future python versions
(i.e. after 2.6) are used (previously distinguished by "from external import X"
and "import X").
